Any grill should be covered when not in use to protect it from outdoor elements. Wipe the grill surface down after each use with mild soap and a sponge before putting on the grill cover. Salt in the air (especially in coastal regions) can deposit on the grill surface and forms rust. By wiping down the grill after use and utilizing a grill cover will properly protect your grill from outdoor elements. Our grill cover can be purchased at the link below.